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Abstract #1105

Imagine yourself flying in MRI: disagreement between visual scene and supine position during fMRI

Matsuo K, Bagarinao E, Nakai T, Takeda H, Kato C, Isoda H, Takehara Y
National Center for Geriatrics and Gerontology

Functional MRI was conducted during subjects, lying on their back, seeing a bird's-eye view of a plane going and returning horizontally over the earth (Prone condition). Thus, the orientation of the visual scene contradicted the body position. As compared with a condition of looking up a plane crossing in the sky (Supine condition), the Prone condition augmented bilateral activation around the visual cortex and parahippocampal gyrus. These increases of activation during the disagreement between the visual and somatosensory information might be related to the object-based visual processing of displayed scenes in disregard of the subjects own proprioceptive/vestibular information.